Warm the heavy whipping cream in the microwave or saucepan until warm to touch

Melt the butter in a saucepan but dont let it brown

Add the flour and stir it quickly into the butter

Cook and stir the mixture for about 5-8 minutes. the butter and flour will dry out slightly and turn just a bit darker to a more golden color. Do not let it brown or darken; we are creating a "blond" or golden roux, where the flour has just been cooked.

Pour in just a few tablespoons of the hot milk, just enough to moisten the flour and butter mixture. Stir thoroughly to loosen up the thick flour mixture.

Now grab the whisk and gradually add the rest of the milk to the loosened flour mixture while whisking constantly. Whisk vigorously until smooth!

Cook, stirring constantly, until starting to bubble and thicken. You will be left with a thick, warm, creamy mix of flour, butter, and milk. From here, you can add cheese, salt, and pepper to create a sauce for mac 'n' cheese

Boil water and cook the pasta until aldante

Mix the pasta and the cream into a single pan

Start slowly adding all of the freshly shredded cheeses to the mixture. cook until melted

Add a few torn slices of white american cheese.